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7 Technical data
7 Technical data
7.1 Medium
Working medium:
7.2 Temperature
Ambient temperature:
Media temperature:
Storage temperature:
7.3 Pressure
Control pressure:
Operating pressure:
Pressure/temperature
diagram:
Pressure rating:
GEMÜ R481
Gaseous and liquid media which have no negative impact on the physical and chemical properties
of the disc and seat material.
-10 to 70 °C
-10 to 150 °C
Depending on the liner and disc material or the type of liner fixing
Liner material
NBR (code J)
SBR (AB/P) (code F)
EPDM (code M)
EPDM (code W)
NBR (code N)
EPDM (code E)
EPDM (code Z)
FPM (code V)
-10
0
14 32
FPM material not suitable for water/steam applications above 100 °C,
Observe Pressure/Temperature diagram.
5 to 40 °C
6 to 8 bar
0 to 16 bar
Use (installation) as end-of-line valve
DN 50 – 200: 10 bar
DN 250, 300: 6 bar
18
DN 50 - 200
16
14
12
DN 250, 300
10
8
6
4
2
0
-20
0
20
PN 6
PN 10
PN 16
Bonded liner (code B)
Disc material (code E)
10
20
30
40
50
60
50 68
86 104 122 140 158 176 194 212 230 248 266 284 302
40
60
80
100
Temperature [°C]
10 / 41
Disc material (code R)
70
80
90 100 110 120 130 140 150
Temperature
120
140
160
www.gemu-group.com
°C
°F
180
200
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